Brian, Realizing you have not followed my postings on the CAF thing, I simply will say I think you have to deal with both elimination and prevention. I think you say a bit of that as well with your material selection and adding pads presentation. As for the pacemaker, one of our own wrote the following choosing, probably, wisely not to post it to the forum for the reasons indicated? I think it points to both elimination in the first place and prevention as the whole assembly is sealed very well. Earl, To set the record straight - Yes, a pacemaker is sealed. In fact, the electronics within the pacer are hermetically sealed (ala Mil Std parts), then the whole system is welded within a titanium case, which is also hermetically sealed. Ending up with a double seal against nasty conductive body juices, in a warm, moist environment. Just don't ever short out the battery!! Very high energy density! (ala 12 Ga w/00 shot at 6 ft). You would not have to worry about patching up the hole it created! ... or ants 'formicing' your boards. I had best not post this. I would get flamed for such a grizzly posting! Have a good day! Earl --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------